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中文摘要：
生态系统服务功能的定量评价是当前生态学与生态经济学研究的热点课题。根据太白山植被类型及覆盖度的分布，利用生态经济学方法，定量测定各类植被的生态服务价值。结果表明：太白山区植被生态系统服务功能的总价值为12．52×10^8元／a，单位面积的生态服务价值平均为22041．09形hm^2·a。其中有机质生产价值为1．63×10^8元/a，涵养水源价值量为2．35×10^8元/a，植被保持土壤的经济价值为0．63×10^8元8/a，固定CO2价值为2．99×10^8元／a，释放01价值为3．18×10^8元／a，净化空气价值为1．74×10^8元／a。其中植被的固碳释氧价值最高，占总价值的49．3％，其次是涵养水源的价值，占18．8％。
英文摘要：
Especially after the publication of Costanza＇s famous article in Nature in 1997, evaluation of ecosystem services has been one of the hottest and most debated issues in the field of ecology and ecological economics. According to different vegetation types and their cover degrees in the Taibai Mountains in Shaanxi , combined with the advance of new research, this research studied the value of the vegetation ecosystem services. The results showed that ： （1） The total value of ecosystem services is 12.52 billion yuan per year. （2） The value of land - vegetation＇s primary productivity is 1.63 billion yuan/a; （3） The value of vegetation＇s water conservation is 2.35 billion yuan/a. （4） The value of vegetation ＇s soil and fertilization conservation is 0.63 billion yuarl/a; （5） The value of fixing CO2 and releasing O2 are 2.99 billion yuan/a and 3.18 billion yuan/a; （6） The value of environmental purification is 1.74 billion yuan/a. CO2 assimilation and O2 release take the first place, accounting for 49.3%. Water conservation takes the second place, accounting for 18.8%.
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